BU4PPF

with r and c denoting the shape parameters.

This distribution can be generalized with location and scale parameters in the usual way using the relation

LET <y> = BU4PPF(<p>,<r>,<c>,<loc>,<scale>)
                        <SUBSET/EXCEPT/FOR qualification>
where <p> is a number, parameter, or variable in the interval (0,1);
            <y> is a variable or a parameter (depending on what <p> is) where the computed Burr type 4 ppf value is stored;
            <r> is a positive number, parameter, or variable that specifies the first shape parameter;
            <c> is a positive number, parameter, or variable that specifies the second shape parameter;
            <loc> is a number, parameter, or variable that specifies the location parameter;
            <scale> is a positive number, parameter, or variable that specifies the scale parameter;
and where the <SUBSET/EXCEPT/FOR qualification> is optional.

If <loc> and <scale> are omitted, they default to 0 and 1, respectively.

LET A = BU4PPF(0.95,0.2,1.7)
LET Y = BU4PPF(P,0.5,2.2,0,5)
PLOT BU4PPF(P,2,1.8,0,5) FOR P = 0.01 0.01 0.99

None

BURR TYPE IV is a synonym for BURR TYPE 4.

BU4PDF	= Compute the Burr type 4 probability density function.
BU4CDF	= Compute the Burr type 4 cumulative distribution function.
BU2PDF	= Compute the Burr type 2 probability density function.
BU3PDF	= Compute the Burr type 3 probability density function.
BU5PDF	= Compute the Burr type 5 probability density function.
BU6PDF	= Compute the Burr type 6 probability density function.
BU7PDF	= Compute the Burr type 7 probability density function.
BU8PDF	= Compute the Burr type 8 probability density function.
BU9PDF	= Compute the Burr type 9 probability density function.
B10PDF	= Compute the Burr type 10 probability density function.
B11PDF	= Compute the Burr type 11 probability density function.
B12PDF	= Compute the Burr type 12 probability density function.
RAYPDF	= Compute the Rayleigh probability density function.
WEIPDF	= Compute the Weibull probability density function.
EWEPDF	= Compute the exponentiated Weibull probability density function.

Burr (1942), "Cumulative Frequency Functions", Annals of Mathematical Statistics, 13, pp. 215-232.

Johnson, Kotz, and Balakrishnan (1994), "Contiunuous Univariate Distributions--Volume 1", Second Edition, Wiley, pp. 53-54.

Devroye (1986), "Non-Uniform Random Variate Generation", Springer-Verlang, pp. 476-477.

Distributional Modeling

2007/10

 
LABEL CASE ASIS
TITLE CASE ASIS
TITLE OFFSET 2
.
MULTIPLOT 4 4
MULTIPLOT CORNER COORDINATES 0 0 100 95
MULTIPLOT SCALE FACTOR 4
.
LET RVAL = DATA 0.5  1  2  5
LET CVAL = DATA 0.5  1  2  5
.
LOOP FOR IROW = 1 1 4
    LOOP FOR ICOL = 1 1 4
        LET R  = RVAL(IROW)
        LET C = CVAL(ICOL)
        TITLE R = ^r, C = ^c
        PLOT BU4PPF(P,R,C) FOR P = 0  0.01  0.99
    END OF LOOP
END OF LOOP
.
END OF MULTIPLOT
.
JUSTIFICATION CENTER
MOVE 50 97
TEXT Burr Type 4 Percent Point Functions